clang/test/CodeGen/xray-customevent.cpp

   1 // RUN: %clang_cc1 -fxray-instrument -x c++ -std=c++11 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   2
   3 // CHECK-LABEL: @_Z16alwaysInstrumentv
   4 [[clang::xray_always_instrument]] void alwaysInstrument() {
   5   static constexpr char kPhase[] = "instrument";
   6   __xray_customevent(kPhase, 10);
   7   // CHECK: call void @llvm.xray.customevent(ptr{{.*}}, i64 10)
   8 }
   9
  10 // CHECK-LABEL: @_Z15neverInstrumentv
  11 [[clang::xray_never_instrument]] void neverInstrument() {
  12   static constexpr char kPhase[] = "never";
  13   __xray_customevent(kPhase, 5);
  14   // CHECK-NOT: call void @llvm.xray.customevent(
  15 }
  16
  17 // CHECK-LABEL: @_Z21conditionalInstrumenti
  18 [[clang::xray_always_instrument]] void conditionalInstrument(int v) {
  19   static constexpr char kTrue[] = "true";
  20   static constexpr char kUntrue[] = "untrue";
  21   if (v % 2)
  22     __xray_customevent(kTrue, 4);
  23   else
  24     __xray_customevent(kUntrue, 6);
  25
  26   // CHECK: call void @llvm.xray.customevent(ptr{{.*}}, i64 4)
  27   // CHECK: call void @llvm.xray.customevent(ptr{{.*}}, i64 6)
  28 }